2 * Copyright (C) 2011 Lothar Waßmann <LW@KARO-electronics.de>
3 * based on: board/freesclae/mx28_evk.c (C) 2010 Freescale Semiconductor, Inc.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
23 #include <fdt_support.h>
27 #include <linux/list.h>
31 #include <asm/arch/iomux-mx28.h>
32 #include <asm/arch/clock.h>
33 #include <asm/arch/imx-regs.h>
34 #include <asm/arch/sys_proto.h>
36 #include "../common/karo.h"
38 DECLARE_GLOBAL_DATA_PTR;
40 #define MXS_GPIO_NR(p, o) (((p) << 5) | (o))
42 #define TX28_LCD_PWR_GPIO MX28_PAD_LCD_ENABLE__GPIO_1_31
43 #define TX28_LCD_RST_GPIO MX28_PAD_LCD_RESET__GPIO_3_30
44 #define TX28_LCD_BACKLIGHT_GPIO MX28_PAD_PWM0__GPIO_3_16
46 #define TX28_USBH_VBUSEN_GPIO MX28_PAD_SPDIF__GPIO_3_27
47 #define TX28_USBH_OC_GPIO MX28_PAD_JTAG_RTCK__GPIO_4_20
48 #define TX28_USBOTG_VBUSEN_GPIO MX28_PAD_GPMI_CE2N__GPIO_0_18
49 #define TX28_USBOTG_OC_GPIO MX28_PAD_GPMI_CE3N__GPIO_0_19
50 #define TX28_USBOTG_ID_GPIO MX28_PAD_PWM2__GPIO_3_18
52 #define TX28_LED_GPIO MX28_PAD_ENET0_RXD3__GPIO_4_10
54 static const struct gpio tx28_gpios[] = {
55 { TX28_USBH_VBUSEN_GPIO, GPIOF_OUTPUT_INIT_LOW, "USBH VBUSEN", },
56 { TX28_USBH_OC_GPIO, GPIOF_INPUT, "USBH OC", },
57 { TX28_USBOTG_VBUSEN_GPIO, GPIOF_OUTPUT_INIT_LOW, "USBOTG VBUSEN", },
58 { TX28_USBOTG_OC_GPIO, GPIOF_INPUT, "USBOTG OC", },
59 { TX28_USBOTG_ID_GPIO, GPIOF_INPUT, "USBOTG ID", },
62 static const iomux_cfg_t tx28_pads[] = {
64 #if CONFIG_CONS_INDEX == 0
65 MX28_PAD_AUART0_RX__DUART_CTS,
66 MX28_PAD_AUART0_TX__DUART_RTS,
67 MX28_PAD_AUART0_CTS__DUART_RX,
68 MX28_PAD_AUART0_RTS__DUART_TX,
69 #elif CONFIG_CONS_INDEX == 1
70 MX28_PAD_AUART1_RX__AUART1_RX,
71 MX28_PAD_AUART1_TX__AUART1_TX,
72 MX28_PAD_AUART1_CTS__AUART1_CTS,
73 MX28_PAD_AUART1_RTS__AUART1_RTS,
74 #elif CONFIG_CONS_INDEX == 2
75 MX28_PAD_AUART3_RX__AUART3_RX,
76 MX28_PAD_AUART3_TX__AUART3_TX,
77 MX28_PAD_AUART3_CTS__AUART3_CTS,
78 MX28_PAD_AUART3_RTS__AUART3_RTS,
80 /* I2C bus for internal DS1339, PCA9554 and on DIMM pins 40/41 */
81 MX28_PAD_I2C0_SCL__I2C0_SCL,
82 MX28_PAD_I2C0_SDA__I2C0_SDA,
85 MX28_PAD_SPDIF__GPIO_3_27,
86 MX28_PAD_JTAG_RTCK__GPIO_4_20,
88 /* USBOTG VBUSEN, OC, ID */
89 MX28_PAD_GPMI_CE2N__GPIO_0_18,
90 MX28_PAD_GPMI_CE3N__GPIO_0_19,
91 MX28_PAD_PWM2__GPIO_3_18,
98 /* provide at least _some_ sort of randomness */
103 static inline void random_init(void)
105 struct mxs_digctl_regs *digctl_regs = (void *)MXS_DIGCTL_BASE;
109 for (i = 0; i < MAX_LOOPS; i++) {
110 unsigned int usec = readl(&digctl_regs->hw_digctl_microseconds);
112 seed = get_timer(usec + random + seed);
118 #define RTC_PERSISTENT0_CLK32_MASK (RTC_PERSISTENT0_CLOCKSOURCE | \
119 RTC_PERSISTENT0_XTAL32KHZ_PWRUP)
120 static u32 boot_cause __attribute__((section("data")));
122 int board_early_init_f(void)
124 struct mxs_rtc_regs *rtc_regs = (void *)MXS_RTC_BASE;
130 /* IO0 clock at 480MHz */
131 mxs_set_ioclk(MXC_IOCLK0, 480000);
132 /* IO1 clock at 480MHz */
133 mxs_set_ioclk(MXC_IOCLK1, 480000);
135 /* SSP0 clock at 96MHz */
136 mxs_set_sspclk(MXC_SSPCLK0, 96000, 0);
137 /* SSP2 clock at 96MHz */
138 mxs_set_sspclk(MXC_SSPCLK2, 96000, 0);
140 gpio_request_array(tx28_gpios, ARRAY_SIZE(tx28_gpios));
141 mxs_iomux_setup_multiple_pads(tx28_pads, ARRAY_SIZE(tx28_pads));
143 while ((rtc_stat = readl(&rtc_regs->hw_rtc_stat)) &
144 RTC_STAT_STALE_REGS_PERSISTENT0) {
149 boot_cause = readl(&rtc_regs->hw_rtc_persistent0);
150 if ((boot_cause & RTC_PERSISTENT0_CLK32_MASK) !=
151 RTC_PERSISTENT0_CLK32_MASK) {
152 if (boot_cause & RTC_PERSISTENT0_CLOCKSOURCE)
154 writel(RTC_PERSISTENT0_CLK32_MASK,
155 &rtc_regs->hw_rtc_persistent0_set);
160 serial_puts("Inconsistent value in RTC_PERSISTENT0 register; power-on-reset required\n");
166 /* Address of boot parameters */
167 #ifdef CONFIG_OF_LIBFDT
168 gd->bd->bi_arch_number = -1;
170 gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x1000;
176 return mxs_dram_init();
179 #ifdef CONFIG_CMD_MMC
180 static int tx28_mmc_wp(int dev_no)
185 int board_mmc_init(bd_t *bis)
187 return mxsmmc_initialize(bis, 0, tx28_mmc_wp, NULL);
189 #endif /* CONFIG_CMD_MMC */
191 #ifdef CONFIG_FEC_MXC
192 #ifdef CONFIG_GET_FEC_MAC_ADDR_FROM_IIM
194 #ifdef CONFIG_FEC_MXC_MULTI
195 #define FEC_MAX_IDX 1
197 #define FEC_MAX_IDX 0
203 static int fec_get_mac_addr(int index)
206 struct mxs_ocotp_regs *ocotp_regs =
207 (struct mxs_ocotp_regs *)MXS_OCOTP_BASE;
208 u32 *cust = &ocotp_regs->hw_ocotp_cust0;
210 char env_name[] = "eth.addr";
214 if (index < 0 || index > FEC_MAX_IDX)
217 /* set this bit to open the OTP banks for reading */
218 writel(OCOTP_CTRL_RD_BANK_OPEN,
219 &ocotp_regs->hw_ocotp_ctrl_set);
221 /* wait until OTP contents are readable */
222 while (OCOTP_CTRL_BUSY & readl(&ocotp_regs->hw_ocotp_ctrl)) {
228 for (i = 0; i < sizeof(mac); i++) {
229 int shift = 24 - i % 4 * 8;
232 val = readl(&cust[index * 8 + i]);
233 mac[i] = val >> shift;
235 if (!is_valid_ether_addr(mac))
239 snprintf(env_name, sizeof(env_name), "ethaddr");
241 snprintf(env_name, sizeof(env_name), "eth%daddr", index);
243 eth_setenv_enetaddr(env_name, mac);
246 #endif /* CONFIG_GET_FEC_MAC_ADDR_FROM_IIM */
248 static const iomux_cfg_t tx28_fec_pads[] = {
249 MX28_PAD_ENET0_RX_EN__ENET0_RX_EN,
250 MX28_PAD_ENET0_RXD0__ENET0_RXD0,
251 MX28_PAD_ENET0_RXD1__ENET0_RXD1,
254 int board_eth_init(bd_t *bis)
258 /* Reset the external phy */
259 gpio_direction_output(MX28_PAD_ENET0_RX_CLK__GPIO_4_13, 0);
261 /* Power on the external phy */
262 gpio_direction_output(MX28_PAD_PWM4__GPIO_3_29, 1);
264 /* Pull strap pins to high */
265 gpio_direction_output(MX28_PAD_ENET0_RX_EN__GPIO_4_2, 1);
266 gpio_direction_output(MX28_PAD_ENET0_RXD0__GPIO_4_3, 1);
267 gpio_direction_output(MX28_PAD_ENET0_RXD1__GPIO_4_4, 1);
268 gpio_direction_input(MX28_PAD_ENET0_TX_CLK__GPIO_4_5);
271 gpio_set_value(MX28_PAD_ENET0_RX_CLK__GPIO_4_13, 1);
274 mxs_iomux_setup_multiple_pads(tx28_fec_pads, ARRAY_SIZE(tx28_fec_pads));
276 ret = cpu_eth_init(bis);
278 printf("cpu_eth_init() failed: %d\n", ret);
282 ret = fec_get_mac_addr(0);
284 printf("Failed to read FEC0 MAC address from OCOTP\n");
287 #ifdef CONFIG_FEC_MXC_MULTI
288 if (getenv("ethaddr")) {
289 ret = fecmxc_initialize_multi(bis, 0, 0, MXS_ENET0_BASE);
291 printf("FEC MXS: Unable to init FEC0\n");
296 ret = fec_get_mac_addr(1);
298 printf("Failed to read FEC1 MAC address from OCOTP\n");
301 if (getenv("eth1addr")) {
302 ret = fecmxc_initialize_multi(bis, 1, 1, MXS_ENET1_BASE);
304 printf("FEC MXS: Unable to init FEC1\n");
310 if (getenv("ethaddr")) {
311 ret = fecmxc_initialize(bis);
316 #endif /* CONFIG_FEC_MXC */
324 void show_activity(int arg)
326 static int led_state = LED_STATE_INIT;
329 if (led_state == LED_STATE_INIT) {
331 gpio_set_value(TX28_LED_GPIO, 1);
332 led_state = LED_STATE_ON;
334 if (get_timer(last) > CONFIG_SYS_HZ) {
336 if (led_state == LED_STATE_ON) {
337 gpio_set_value(TX28_LED_GPIO, 0);
339 gpio_set_value(TX28_LED_GPIO, 1);
341 led_state = 1 - led_state;
346 static const iomux_cfg_t stk5_pads[] = {
347 /* SW controlled LED on STK5 baseboard */
348 MX28_PAD_ENET0_RXD3__GPIO_4_10,
351 static const struct gpio stk5_gpios[] = {
355 static ushort tx28_cmap[256];
356 vidinfo_t panel_info = {
357 /* set to max. size supported by SoC */
361 .vl_bpix = LCD_COLOR24, /* Bits per pixel, 0: 1bpp, 1: 2bpp, 2: 4bpp, 3: 8bpp ... */
365 static struct fb_videomode tx28_fb_modes[] = {
367 /* Standard VGA timing */
372 .pixclock = KHZ2PICOS(25175),
379 .vmode = FB_VMODE_NONINTERLACED,
382 /* Emerging ETV570 640 x 480 display. Syncs low active,
383 * DE high active, 115.2 mm x 86.4 mm display area
384 * VGA compatible timing
390 .pixclock = KHZ2PICOS(25175),
397 .vmode = FB_VMODE_NONINTERLACED,
400 /* Emerging ET0350G0DH6 320 x 240 display.
401 * 70.08 mm x 52.56 mm display area.
407 .pixclock = KHZ2PICOS(6500),
408 .left_margin = 68 - 34,
411 .upper_margin = 18 - 3,
414 .vmode = FB_VMODE_NONINTERLACED,
417 /* Emerging ET0430G0DH6 480 x 272 display.
418 * 95.04 mm x 53.856 mm display area.
424 .pixclock = KHZ2PICOS(9000),
431 .vmode = FB_VMODE_NONINTERLACED,
434 /* Emerging ET0500G0DH6 800 x 480 display.
435 * 109.6 mm x 66.4 mm display area.
441 .pixclock = KHZ2PICOS(33260),
442 .left_margin = 216 - 128,
444 .right_margin = 1056 - 800 - 216,
445 .upper_margin = 35 - 2,
447 .lower_margin = 525 - 480 - 35,
448 .vmode = FB_VMODE_NONINTERLACED,
451 /* Emerging ETQ570G0DH6 320 x 240 display.
452 * 115.2 mm x 86.4 mm display area.
458 .pixclock = KHZ2PICOS(6400),
462 .upper_margin = 16, /* 15 according to datasheet */
463 .vsync_len = 3, /* TVP -> 1>x>5 */
464 .lower_margin = 4, /* 4.5 according to datasheet */
465 .vmode = FB_VMODE_NONINTERLACED,
468 /* Emerging ET0700G0DH6 800 x 480 display.
469 * 152.4 mm x 91.44 mm display area.
475 .pixclock = KHZ2PICOS(33260),
476 .left_margin = 216 - 128,
478 .right_margin = 1056 - 800 - 216,
479 .upper_margin = 35 - 2,
481 .lower_margin = 525 - 480 - 35,
482 .vmode = FB_VMODE_NONINTERLACED,
485 /* unnamed entry for assigning parameters parsed from 'video_mode' string */
486 .vmode = FB_VMODE_NONINTERLACED,
490 static int lcd_enabled = 1;
492 void lcd_enable(void)
495 * global variable from common/lcd.c
496 * Set to 0 here to prevent messages from going to LCD
497 * rather than serial console
501 karo_load_splashimage(1);
503 debug("Switching LCD on\n");
504 gpio_set_value(TX28_LCD_PWR_GPIO, 1);
506 gpio_set_value(TX28_LCD_RST_GPIO, 1);
508 gpio_set_value(TX28_LCD_BACKLIGHT_GPIO, 0);
512 void lcd_disable(void)
516 void lcd_panel_disable(void)
519 debug("Switching LCD off\n");
520 gpio_set_value(TX28_LCD_BACKLIGHT_GPIO, 1);
521 gpio_set_value(TX28_LCD_RST_GPIO, 0);
522 gpio_set_value(TX28_LCD_PWR_GPIO, 0);
526 static const iomux_cfg_t stk5_lcd_pads[] = {
528 MX28_PAD_LCD_RESET__GPIO_3_30 | MXS_PAD_CTRL,
529 /* LCD POWER_ENABLE */
530 MX28_PAD_LCD_ENABLE__GPIO_1_31 | MXS_PAD_CTRL,
531 /* LCD Backlight (PWM) */
532 MX28_PAD_PWM0__GPIO_3_16 | MXS_PAD_CTRL,
535 MX28_PAD_LCD_D00__LCD_D0 | MXS_PAD_CTRL,
536 MX28_PAD_LCD_D01__LCD_D1 | MXS_PAD_CTRL,
537 MX28_PAD_LCD_D02__LCD_D2 | MXS_PAD_CTRL,
538 MX28_PAD_LCD_D03__LCD_D3 | MXS_PAD_CTRL,
539 MX28_PAD_LCD_D04__LCD_D4 | MXS_PAD_CTRL,
540 MX28_PAD_LCD_D05__LCD_D5 | MXS_PAD_CTRL,
541 MX28_PAD_LCD_D06__LCD_D6 | MXS_PAD_CTRL,
542 MX28_PAD_LCD_D07__LCD_D7 | MXS_PAD_CTRL,
543 MX28_PAD_LCD_D08__LCD_D8 | MXS_PAD_CTRL,
544 MX28_PAD_LCD_D09__LCD_D9 | MXS_PAD_CTRL,
545 MX28_PAD_LCD_D10__LCD_D10 | MXS_PAD_CTRL,
546 MX28_PAD_LCD_D11__LCD_D11 | MXS_PAD_CTRL,
547 MX28_PAD_LCD_D12__LCD_D12 | MXS_PAD_CTRL,
548 MX28_PAD_LCD_D13__LCD_D13 | MXS_PAD_CTRL,
549 MX28_PAD_LCD_D14__LCD_D14 | MXS_PAD_CTRL,
550 MX28_PAD_LCD_D15__LCD_D15 | MXS_PAD_CTRL,
551 MX28_PAD_LCD_D16__LCD_D16 | MXS_PAD_CTRL,
552 MX28_PAD_LCD_D17__LCD_D17 | MXS_PAD_CTRL,
553 MX28_PAD_LCD_D18__LCD_D18 | MXS_PAD_CTRL,
554 MX28_PAD_LCD_D19__LCD_D19 | MXS_PAD_CTRL,
555 MX28_PAD_LCD_D20__LCD_D20 | MXS_PAD_CTRL,
556 MX28_PAD_LCD_D21__LCD_D21 | MXS_PAD_CTRL,
557 MX28_PAD_LCD_D22__LCD_D22 | MXS_PAD_CTRL,
558 MX28_PAD_LCD_D23__LCD_D23 | MXS_PAD_CTRL,
559 MX28_PAD_LCD_RD_E__LCD_VSYNC | MXS_PAD_CTRL,
560 MX28_PAD_LCD_WR_RWN__LCD_HSYNC | MXS_PAD_CTRL,
561 MX28_PAD_LCD_RS__LCD_DOTCLK | MXS_PAD_CTRL,
562 MX28_PAD_LCD_CS__LCD_CS | MXS_PAD_CTRL,
563 MX28_PAD_LCD_VSYNC__LCD_VSYNC | MXS_PAD_CTRL,
564 MX28_PAD_LCD_HSYNC__LCD_HSYNC | MXS_PAD_CTRL,
565 MX28_PAD_LCD_DOTCLK__LCD_DOTCLK | MXS_PAD_CTRL,
568 static const struct gpio stk5_lcd_gpios[] = {
569 { TX28_LCD_RST_GPIO, GPIOF_OUTPUT_INIT_LOW, "LCD RESET", },
570 { TX28_LCD_PWR_GPIO, GPIOF_OUTPUT_INIT_LOW, "LCD POWER", },
571 { TX28_LCD_BACKLIGHT_GPIO, GPIOF_OUTPUT_INIT_HIGH, "LCD BACKLIGHT", },
574 extern void video_hw_init(void *lcdbase);
576 void lcd_ctrl_init(void *lcdbase)
578 int color_depth = 24;
582 struct fb_videomode *p = tx28_fb_modes;
583 struct fb_videomode fb_mode;
584 int xres_set = 0, yres_set = 0, bpp_set = 0, refresh_set = 0;
587 debug("LCD disabled\n");
592 debug("Disabling LCD\n");
599 vm = getenv("video_mode");
601 debug("Disabling LCD\n");
605 if (karo_fdt_get_fb_mode(working_fdt, vm, &fb_mode) == 0) {
607 debug("Using video mode from FDT\n");
611 debug("Trying compiled-in video modes\n");
612 while (p->name != NULL) {
613 if (strcmp(p->name, vm) == 0) {
614 debug("Using video mode: '%s'\n", p->name);
621 debug("Trying to decode video_mode: '%s'\n", vm);
622 while (*vm != '\0') {
623 if (*vm >= '0' && *vm <= '9') {
626 val = simple_strtoul(vm, &end, 0);
629 if (val > panel_info.vl_col)
630 val = panel_info.vl_col;
633 } else if (!yres_set) {
634 if (val > panel_info.vl_row)
635 val = panel_info.vl_row;
638 } else if (!bpp_set) {
648 printf("Invalid color depth: '%.*s' in video_mode; using default: '%u'\n",
649 end - vm, vm, color_depth);
652 } else if (!refresh_set) {
679 if (p->xres == 0 || p->yres == 0) {
680 printf("Invalid video mode: %s\n", getenv("video_mode"));
682 printf("Supported video modes are:");
683 for (p = &tx28_fb_modes[0]; p->name != NULL; p++) {
684 printf(" %s", p->name);
689 panel_info.vl_col = p->xres;
690 panel_info.vl_row = p->yres;
692 switch (color_depth) {
694 panel_info.vl_bpix = LCD_COLOR8;
697 panel_info.vl_bpix = LCD_COLOR16;
700 panel_info.vl_bpix = LCD_COLOR24;
703 p->pixclock = KHZ2PICOS(refresh *
704 (p->xres + p->left_margin + p->right_margin + p->hsync_len) *
705 (p->yres + p->upper_margin + p->lower_margin + p->vsync_len) /
707 debug("Pixel clock set to %lu.%03lu MHz\n",
708 PICOS2KHZ(p->pixclock) / 1000, PICOS2KHZ(p->pixclock) % 1000);
710 gpio_request_array(stk5_lcd_gpios, ARRAY_SIZE(stk5_lcd_gpios));
711 mxs_iomux_setup_multiple_pads(stk5_lcd_pads,
712 ARRAY_SIZE(stk5_lcd_pads));
714 debug("video format: %ux%u-%u@%u\n", p->xres, p->yres,
715 color_depth, refresh);
717 if (karo_load_splashimage(0) == 0) {
720 /* setup env variable for mxsfb display driver */
721 snprintf(vmode, sizeof(vmode), "%dx%dMR-%d@%d",
722 p->xres, p->yres, color_depth, refresh);
723 setenv("videomode", vmode);
725 debug("Initializing LCD controller\n");
726 video_hw_init(lcdbase);
727 setenv("videomode", NULL);
729 debug("Skipping initialization of LCD controller\n");
733 #define lcd_enabled 0
734 #endif /* CONFIG_LCD */
736 static void stk5_board_init(void)
738 gpio_request_array(stk5_gpios, ARRAY_SIZE(stk5_gpios));
739 mxs_iomux_setup_multiple_pads(stk5_pads, ARRAY_SIZE(stk5_pads));
742 static void stk5v3_board_init(void)
747 static void stk5v5_board_init(void)
751 /* init flexcan transceiver enable GPIO */
752 gpio_request_one(MXS_GPIO_NR(0, 1), GPIOF_OUTPUT_INIT_HIGH,
753 "Flexcan Transceiver");
754 mxs_iomux_setup_pad(MX28_PAD_LCD_D00__GPIO_1_0);
757 int board_late_init(void)
759 const char *baseboard;
763 baseboard = getenv("baseboard");
767 if (strncmp(baseboard, "stk5", 4) == 0) {
768 printf("Baseboard: %s\n", baseboard);
769 if ((strlen(baseboard) == 4) ||
770 strcmp(baseboard, "stk5-v3") == 0) {
772 } else if (strcmp(baseboard, "stk5-v5") == 0) {
773 const char *otg_mode = getenv("otg_mode");
775 if (otg_mode && strcmp(otg_mode, "host") == 0) {
776 printf("otg_mode='%s' is incompatible with baseboard %s; setting to 'none'\n",
777 otg_mode, baseboard);
778 setenv("otg_mode", "none");
782 printf("WARNING: Unsupported STK5 board rev.: %s\n",
786 printf("WARNING: Unsupported baseboard: '%s'\n",
794 #define BOOT_CAUSE_MASK (RTC_PERSISTENT0_EXTERNAL_RESET | \
795 RTC_PERSISTENT0_ALARM_WAKE | \
796 RTC_PERSISTENT0_THERMAL_RESET)
798 static void thermal_init(void)
800 struct mxs_power_regs *power_regs = (void *)MXS_POWER_BASE;
801 struct mxs_clkctrl_regs *clkctrl_regs = (void *)MXS_CLKCTRL_BASE;
803 writel(POWER_THERMAL_LOW_POWER | POWER_THERMAL_OFFSET_ADJ_ENABLE |
804 POWER_THERMAL_OFFSET_ADJ_OFFSET(3),
805 &power_regs->hw_power_thermal);
807 writel(CLKCTRL_RESET_EXTERNAL_RESET_ENABLE |
808 CLKCTRL_RESET_THERMAL_RESET_ENABLE,
809 &clkctrl_regs->hw_clkctrl_reset);
814 struct mxs_power_regs *power_regs = (void *)MXS_POWER_BASE;
815 u32 pwr_sts = readl(&power_regs->hw_power_sts);
816 u32 pwrup_src = (pwr_sts >> 24) & 0x3f;
817 const char *dlm = "";
819 printf("Board: Ka-Ro TX28-4%sx%d\n", TX28_MOD_SUFFIX,
820 CONFIG_SDRAM_SIZE / SZ_128M);
822 printf("POWERUP Source: ");
823 if (pwrup_src & (3 << 0)) {
824 printf("%sPSWITCH %s voltage", dlm,
825 pwrup_src & (1 << 1) ? "HIGH" : "MID");
828 if (pwrup_src & (1 << 4)) {
829 printf("%sRTC", dlm);
832 if (pwrup_src & (1 << 5)) {
838 if (boot_cause & BOOT_CAUSE_MASK) {
840 printf("Last boot cause: ");
841 if (boot_cause & RTC_PERSISTENT0_EXTERNAL_RESET) {
842 printf("%sEXTERNAL", dlm);
845 if (boot_cause & RTC_PERSISTENT0_THERMAL_RESET) {
846 printf("%sTHERMAL", dlm);
851 if (boot_cause & RTC_PERSISTENT0_ALARM_WAKE) {
852 printf("%sALARM WAKE", dlm);
858 while (pwr_sts & POWER_STS_THERMAL_WARNING) {
859 static int first = 1;
862 printf("CPU too hot to boot\n");
867 pwr_sts = readl(&power_regs->hw_power_sts);
870 if (!(boot_cause & RTC_PERSISTENT0_THERMAL_RESET))
876 #if defined(CONFIG_OF_BOARD_SETUP)
877 #ifdef CONFIG_FDT_FIXUP_PARTITIONS
878 #include <jffs2/jffs2.h>
879 #include <mtd_node.h>
880 struct node_info tx28_nand_nodes[] = {
881 { "fsl,imx28-gpmi-nand", MTD_DEV_TYPE_NAND, },
884 #define fdt_fixup_mtdparts(b,n,c) do { } while (0)
887 static int flexcan_enabled(void *blob)
890 int off = fdt_path_offset(blob, "can0");
893 printf("node 'can0' not found\n");
895 status = fdt_getprop(blob, off, "status", NULL);
896 if (status && strcmp(status, "okay") == 0) {
897 printf("can0 is enabled\n");
901 off = fdt_path_offset(blob, "can1");
903 printf("node 'can1' not found\n");
906 status = fdt_getprop(blob, off, "status", NULL);
907 if (status && strcmp(status, "okay") == 0) {
908 printf("can1 is enabled\n");
911 printf("can driver disabled\n");
915 static void tx28_set_lcd_pins(void *blob, const char *name)
917 int off = fdt_path_offset(blob, name);
919 const struct fdt_property *pc;
925 ph = fdt32_to_cpu(fdt_create_phandle(blob, off));
929 off = fdt_path_offset(blob, "lcdif");
933 pc = fdt_get_property(blob, off, "pinctrl-0", &len);
934 if (!pc || len < sizeof(ph))
937 memcpy((void *)pc->data, &ph, sizeof(ph));
938 fdt_setprop(blob, off, "pinctrl-0", pc->data, len);
941 static void tx28_fixup_flexcan(void *blob, int stk5_v5)
943 const char *can_xcvr = "disabled";
946 if (flexcan_enabled(blob)) {
947 tx28_set_lcd_pins(blob, "lcdif_23bit_pins_a");
950 tx28_set_lcd_pins(blob, "lcdif_24bit_pins_a");
953 const char *otg_mode = getenv("otg_mode");
955 if (otg_mode && (strcmp(otg_mode, "host") == 0))
956 karo_fdt_enable_node(blob, "can1", 0);
958 fdt_find_and_setprop(blob, "/regulators/can-xcvr", "status",
959 can_xcvr, strlen(can_xcvr) + 1, 1);
962 static void tx28_fixup_fec(void *blob)
964 karo_fdt_enable_node(blob, "ethernet1", 0);
967 void ft_board_setup(void *blob, bd_t *bd)
969 const char *baseboard = getenv("baseboard");
970 int stk5_v5 = baseboard != NULL && (strcmp(baseboard, "stk5-v5") == 0);
973 /* TX28-41xx (aka TX28S) has no external RTC
974 * and no I2C GPIO extender
976 karo_fdt_remove_node(blob, "ds1339");
977 karo_fdt_remove_node(blob, "gpio5");
980 karo_fdt_remove_node(blob, "stk5led");
982 tx28_fixup_fec(blob);
984 tx28_fixup_flexcan(blob, stk5_v5);
986 fdt_fixup_mtdparts(blob, tx28_nand_nodes, ARRAY_SIZE(tx28_nand_nodes));
987 fdt_fixup_ethernet(blob);
989 karo_fdt_fixup_touchpanel(blob);
990 karo_fdt_fixup_usb_otg(blob, "usbotg", "fsl,usbphy");
991 karo_fdt_update_fb_mode(blob, getenv("video_mode"));